Similarities to the group avalanche at Stevens Pass in 2012. Many experienced people, some very experienced (2 guides), in a community/media event. Outside magazine published a good article last year about how sometimes being in a group with high competence and experience can sometimes increase danger since you assume that "oh, that guy would surely say something", and simultaneously not wanting to be the one to speak up and be a killjoy. http://www.outsideonline.com/outdoor-adventure/snow-sports/Tunnel-Vision-November-2012.html?page=all